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A human *******cy lasts 38 to 40 weeks, or roughly 10 months. If a woman's toenail fell off on the same day she got *******t, she'd still be waiting for it to grow back when her child was born.
While not everyone's toenails grow at the same rate, regrowing one can take as many as 18 months. This also depends on the toe, with less time needed to grow a small nail for your pinky toe than a big-toe nail.
Toenails consist of keratin, the same foundation for hair and fingernails (as well as animal hooves, horns, and claws). Even though humans have both toenails and fingernails, it takes two or three times as long for the former to grow than for the latter. Scientists aren't entirely sure why, but theorize it has to do with the different uses for and blood flow to the hands and feet.
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